1.Data upload

This tool requires a dataset in *.txt format, which is seperated by comma, semicolon, space or tab delimiter. First row of dataset must include header. When the appropriate file is uploaded, the dataset will be appear immediately on the main page of the tool. Alternatively users can upload one of the example datasets provided within the tool for testing and understanding the operating logic of the tool.

1.1. Data Pre-processing

An important step of the data analysis in statistics is the data pre-processing. Users can perform some basic data pre-processing steps using this tool, including near zero filtering, centering, scaling and log-transformation (natural logarithm). To perform a data pre-processing; (1) check the “Pre-processing” box, (2) select “Survival time”, “Status variable” and variables you wish to exclude from pre-processing (i.e. categorical variables), (3) select one or more pre-processing methods, including near zero filtering, centering, scaling and log-transformation, (4) click “Run pre-process” button to perform the pre-processing.

After the pre-processing, all the selected pre-processing steps will be applied to the dataset and new data set will appear on the main panel of the tool. If there are any variables which have near zero variances, they will be excluded from the dataset and will appear in a new table.